20123202143 has 8 divisors (see below), whose sum is σ = 22660732416. Its totient is φ = 17703696600.

The previous prime is 20123202137. The next prime is 20123202191. The reversal of 20123202143 is 34120232102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20123202143 - 2⁸ = 20123201887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123202443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29505821 + ... + 29506502.

It is an arithmetic number, because the mean of its divisors is an integer number (2832591552).

Almost surely, 2^20123202143 is an apocalyptic number.

20123202143 is a deficient number, since it is larger than the sum of its proper divisors (2537530273).

20123202143 is a wasteful number, since it uses less digits than its factorization.

20123202143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59012365.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20123202143 its reverse (34120232102), we get a palindrome (54243434245).

The spelling of 20123202143 in words is "twenty billion, one hundred twenty-three million, two hundred two thousand, one hundred forty-three".